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Stoichiometry

Stoichiometry
Weight of 56 litres of ammonia at N.T.P. is __________ gm.

42.5
2800
56
2.5

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Stoichiometry
The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation

Becomes zero at the critical point
Increases with pressure rise
Both B & C
Decreases with increasing pressure

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Stoichiometry
The atomic heat capacities of all solid elements __________ with decrease in temperature.

Increases
Decreases
Approach zero at 0°C
Remains unchanged

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Stoichiometry
Pick out the wrong conversion formula for the conversion of weight units :

None of these
1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
1 tonne = 1000 kg = 22.046 lbs
1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton

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Stoichiometry
How much O₂ can be obtained from 90 kg of water?

32 kg
90 kg
64 kg
80 kg

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Stoichiometry
For an endothermic reaction, the minimum value of energy of activation will be (where, ΔH = enthalpy of the reaction)

Δ H
>ΔH

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